chars: don't try to see a character in an empty line

This fixes https://savannah.gnu.org/bugs/?48578.

chars: don't try to see a character in an empty line
This fixes https://savannah.gnu.org/bugs/?48578.
bf091be7 · Benno Schulenberg · 103dd063 · bf091be7
Commit bf091be7 authored 8 years ago by Benno Schulenberg
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--- a/src/chars.c
+++ b/src/chars.c
@@ -190,6 +190,9 @@ bool is_word_mbchar(const char *c, bool allow_punct)
 {
    assert(c != NULL);

+    if (*c == '\0')
+	return FALSE;
+
    if (is_alnum_mbchar(c))
 	return TRUE;